Vulnerability Description
The process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER_GUARD environment variable.
CVSS Score
5.5
MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Glibc | <= 2.22 |
Related Weaknesses (CWE)
References
- http://hmarco.org/bugs/glibc_ptr_mangle_weakness.htmlExploit
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.h
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00039.html
- http://www.debian.org/security/2016/dsa-3480
- http://www.openwall.com/lists/oss-security/2016/01/20/1
- http://www.securityfocus.com/bid/81469
- http://www.securitytracker.com/id/1034811
- http://www.ubuntu.com/usn/USN-2985-1
- http://www.ubuntu.com/usn/USN-2985-2
- https://access.redhat.com/errata/RHSA-2017:1916
- https://security.gentoo.org/glsa/201702-11
- https://sourceware.org/bugzilla/show_bug.cgi?id=18928
FAQ
What is CVE-2015-8777?
CVE-2015-8777 is a vulnerability with a CVSS score of 5.5 (MEDIUM). The process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER...
How severe is CVE-2015-8777?
CVE-2015-8777 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-8777?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Glibc.